Upgrade to 20.04 removes saved fingerprints

[Bill (franksmcb)]

18.04 Ubuntu MATE upgraded to 20.04 Ubuntu MATE on 2 March 2020.

T430N

Upgrade competes and reboots. Upon reboot login screen appears and there is no prompt to login using fingerprint scanner.

After login using password the user needs to:

run fprintd-enroll and fingerprints are enrolled.

On logout/reboot login using fingerprint scanner is available.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: fprintd 1.90.1-1
ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18
Uname: Linux 5.4.0-14-generic x86_64
ApportVersion: 2.20.11-0ubuntu18
Architecture: amd64
CurrentDesktop: MATE
Date: Mon Mar 2 22:21:29 2020
InstallationDate: Installed on 2019-12-05 (88 days ago)
InstallationMedia: Ubuntu-MATE 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
SourcePackage: fprintd
UpgradeStatus: Upgraded to focal on 2020-03-02 (0 days ago)

[Sebastien Bacher (seb128)]

Thank you for your bug report, that sounds like an upstream issue, could you report it there https://gitlab.freedesktop.org/libfprint/fprintd/ ?

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Marco Trevisan (Treviño) (3v1n0)]

So this could be fixed upstream by providing some migration tool, but it is not trivial to do so.

Thus, right now it's not worth, as per the fact you can still re-enroll your finger in seconds and that it's not the only auth mode.

[Tom Chiverton (bugs-launchpad-net-falkensweb)]

What if you don't remember your password any more?

[Tom Chiverton (bugs-launchpad-net-falkensweb)]

Also, probably needs going in the release notes to set a known password eg sudo passwd $USER if you use fingerprint login?

[Sebastien Bacher (seb128)]

The fingerprint has never been recommended as the main authentification mechanism. Ideally we would like to migrate existing configuration and are going to keep the item in our backlog but our resources are limited so we don't commit to fix it as a rls target